package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrdersMapper;
import com.itheima.reggie.service.*;
import com.itheima.reggie.utils.ValidateCodeUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {

    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;

    @Override
    /**
     * @description:进行下单
     * @author: yanhongwei
     * @date: 2023/5/31 16:20
     * @param: [orders]
     * @return: void
     **/
    @Transactional
    public void submit(Orders orders) {

        //获取用户id
        Long currentId = BaseContext.getCurrentId();

        //查询购物车数据
        LambdaQueryWrapper<ShoppingCart> cartLambdaQueryWrapper = new LambdaQueryWrapper<>();

        cartLambdaQueryWrapper.eq(ShoppingCart::getUserId, currentId);

        List<ShoppingCart> shoppingCartList = shoppingCartService.list(cartLambdaQueryWrapper);

        if (null == shoppingCartList || shoppingCartList.size() == 0) {
            throw new CustomException("购物车为空,不能下单");
        }

        User user = userService.getById(currentId);

        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);

        if (null == addressBook) {
            throw new CustomException("地址为空,不能下单");
        }

        //向订单表插入数据,一条数据

        //订单号
        long orderId = IdWorker.getId();


        //表示一个线程安全的
        AtomicInteger amount=new AtomicInteger(0);

        List<OrderDetail> orderDetailList=shoppingCartList.stream().map((item)->{
            OrderDetail orderDetail=new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());


        orders.setId(orderId);
        orders.setNumber(String.valueOf(orderId));
        orders.setStatus(2);
        orders.setUserId(currentId);
        orders.setUserName(user.getName());
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setAmount(new BigDecimal(amount.get())); //总金额
        orders.setAddress(addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName()
                + addressBook.getCityName() == null ? "" : addressBook.getCityName()
                + addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName()
                + addressBook.getDetail() == null ? "" : addressBook.getDetail()
        );
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        this.save(orders);


        //向订单明细表插入数据,多条数据
        orderDetailService.saveBatch(orderDetailList);

        //清空购物车数据
        shoppingCartService.remove(cartLambdaQueryWrapper);

    }
}
